Navigators Information File, WWII Sally Bomber or release it for use

or release it for use during flight

made by Askania (under license from Sperry)

It is labeled as Property Air Forces US Army

The poster in the photo represents the collection

they needed to know the contents of this manual

Navigators Information File, WWII Sally Bomber or release it for useThis is an original WWII era Navigators Information File published in 1944 by the US Army Air Force. It is the basic reference book for aircraft navigators in the performance of their duties. See photos. The page numbers are by section, so total pages are not estimated here. It is about 1 2 inch thick. All pages are intact as is the soft cover. Its hard to find another in better condition than this example.